Bacteria Inoculate Crops Against Salty Soil, Potentially Bringing Unworkable Farmland Back to Life

Scientists have used bacteria found in roots of salt-tolerant plants to successfully inoculate alfalfa plants against overly salty soil.

“We take the roots of these salt-tolerant plants (called halophytes), grind them up and grow the bacteria in a petri dish in the lab,” Nielsen said. “Doing this, we isolated over 40 different bacteria isolates, some of which can tolerate ocean-level salt content.”

The team then applied the bacteria isolates to alfalfa seeds through a solution and tested the alfalfa’s ability to grow in high-saline conditions. They saw significant growth of the alfalfa both in their lab and in greenhouse experiments carried out by collaborators at the Institute for Advanced Learning and Research in Virginia.